Antialiasing in VR
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I’ve had to downgrade from a 4090 to a 3080Ti and wow, is it me or is antialiasing at 8 samples an absolute frame rate hog. x4 seems to run ok (well at least on the ramp in the ground ops training mission). But x8 is an absolute stutter fest.
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@scubapics what’s your headset? If it is a higher resolution one with certain antialiasing types at 8x, you could be possibly filling up your VRAM. I haven’t seen this in BMS, but have really had to watch like you do (did maybe?) in DCS VR. With the high resolution of the Pimax 8K X, I’ve seen DCS use, not just allocate, 21gb of VRAM on the Supercarrier deck
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@Snake122 I should have said. HP Reverb G2.
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@scubapics quick test on my G2 with 100% SteamVR resolution (3164x3096 per eye) and no multiplier with BMS. With 8x AA in the Benchmark TE, I saw about 14gb VRAM allocated, with only about 400mb less actually dedicated to use (13.6ish gb). Then with no AA, I saw just under 8gb allocated and with about the same 400mb less being actually dedicated. You quite quickly ramp up your VRAM usage in VR with high antialiasing. Again, not as bad as DCS, but I was a little surprised to see it that high in BMS even, then makes sense when I think about it.
Interestingly at least in the Benchmark TE, there was almost no frame rate hit for 8x AA (mid-40s just entering the cockpit with basically the other settings and features maxed). Having the 24gb of VRAM available may have made the difference or possibly there is another bottleneck in the process with that intense of a graphics load which that TE produces.
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@Snake122 That’ll be it. The 4090 had 24GB VRAM and the 3080Ti 12GB. With x4 anti aliasing it’s at near max usage but running well.